Saw-blade holder.



A. MIGHIE. SAW BLADE HOLDER.

APPLICATION FILED MAY 29, 1914.

Patented Feb. 2, 1915.

3 SHEETS-SHEET 1.

IA/l E/V TOR flrf/zur Mwhw ATTORNEYS WITNESS 8 THE NORRIS PETERS 60-, PHOTO-LITHO., WASHINGTON D. C

A. MIGHIE.

SAW BLADE HOLDER.

APPLICATION FILED MAY 29, 1914.

1,127,062. Patented Feb. 2, 1915.

3 SHEETS-SHEET 2.

b R} N a WITNESSES N INI/f/VTO/f N Arthur ffwhw THE NORRIS PETERS CO.. PHOTO-LITHO. WASHING rON. D. Q

A. MIGHIE.

SAW BLADE HOLDER APPLICATION FILED MAY 29, 1914. 1,127,062. Patented Feb.2, 1915. 3 SHEETSSHEET 3.

m mww INVENTOR file/2w M Ari/m1- ATTORNEYS rrnp STATES PATET orrron.

ARTHUR MICHIE, OF IBEDFORD, INDIANA, ASSIGNOR T0 SHEA & DONNELLY COMPANY INC., 015 BEIDFORD, INDIANA.

SAW-BLADE HOLDER.

Application filed May 29, 1914.

To all whom it may concern:

Be it known that I, ARTHUR Mrorrna, a citizen of the United States, and a resident I of Bedford, in the county of Lawrence and State of Indiana, have invented a new and Improved Saw-Blade Holder, of which the following is a full, clear, and exact description.

My invention relates to stone-sawing machines, and particularly to the means for holding the saw-blades on the saw-frame. With the form of blade holder ordinarily employed a disturbance of the tension of the blades is a necessary incident to the shifting of the blades in the frame.

Objects of mv invention are to provide a saw-blade holder that will permit of the saw-blade being shifted in the saw frame without affecting the tension of the blade; to provide novel means for effectively tensioning the blade; as well as to make provision for the convenient shifting of the posi tion of the blade. and for properly securing the blade in the adjusted position.

In carrying out my invention. use is made of blade holders for the opposite ends of the blade. the said holders having arms provided with turnbuckles for producing tension in the blades, means being provided whereby to readilv move the holders along the saw frame independently of the tensioning means. and properly guide the holder in its movements. Set screws secure the holders in the adjusted position on the saw frame.

The invention will be particularly ex plained in the specific description following.

Reference is to be had to the accompanyin drawings forming a part of this specification. in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an outsidepersnective view showing a series of my improved blade holders. and a portion of the saw frame and blades; Fig. 2 is a similar view showing the inner ends of the holders; Fig. 3 is a side ele ation of one of my improved blade holders. on an enlarged scale. a portion being broken away to show a bearing. a portion of the saw frame being shown in transverse vertical section: Fig. 4 is a fragmentary plan view of a blade holder on the saw frame. Fig. 5 is a perspective view of a guide associated with the blade holder; and

Specification of Letters Patent.

Patented Feb. 2, 1915.

Serial No. 841,841.

Fig. 6 is a detail plan view of a washer to be hereinafter referred to.

In constructing a practical embodiment of my invention in accordance with the illustrated example, a saw frame, designated generally by the numeral 10, is supported and operated in the usual manner. The frame is made up of reversely placed channels, and may have U-bars 11 laid thereon. Between the main channel bars spacing elements 12 are inserted, and rivets 13 are employed to unite the several parts. The frame members 10 thus present vertical side flanges 14. the outer sides of which are faced by the facing plates 15. and the said plates and channel. bars. bv reason of the spacing elements 12. provide guidewavs 16, 16. respectively at the inner and outer sides of the frame.

In order to support the saw blades 17 on the frame 10. my improved holders are each formed with mem ers to receive the ends of the saw-blades. said members being preferablv in the fo m of heads 18 presenting cheeks s aced suflicientlv to accommodate a sawblade th rebetween. Pins 1 extend transversely throu h the cheeks of the said heads to hold the blade.

Extending ontwardlv at the top and bottom of the heads 18 are arms 20. t e one arm extending above the frame 10 and the other beneath the frame. At the o ter ends t e arms 20 are gi en the fo m of bea ings 21. which preferabl have bearing rollers 21 and receive vertical rollers 22 extending from the upper to the lo er head 18. In the present exam le the rollers 22 are formed with reduced tenons 22. which are received within the bearing rollers 21. and the said rollers 22 are held in place in the bearings 21 by washers 24 and stud bolts 23. the said washers and stud bolts being above the upper bearing 21 and at the bottom of the lower hearing 21. At the inner faces of the bearings 21, washers or dust plates 25 are preferably provided. and are formed with edge recesses a for receiving set screws or stud bolts 26 which take into the adjacent faces of the bearings 21.

The arms 20 are provided with turnbuckles 27 for adiusting the tension of the saw blade 17 By turning the turnbuckles to tension the blade. the vertical rollers 22 will be brought firmly against the face plates 15 of the frame 10, so that the said sa'id rollers-"to roll' a'long" the face plates 15.

For the stated purpose, each roller 22 is formed with acollar 28"vvhich exterids into the guideway 16, at. the outer vsideycf the channels of the sawdrame 10,; and-said collarsare formed with suitable holes 28 for 'receiving a turning bar. I ItvVill beclear, that owing to the friction between the rollers 22 and the face 'plates -15, the turning of the rollersywill cause thesamefto' roll along the-said face plat'es. l L

' In order=- to further guide theblade holdp: ers in their movements along t'heisa wframe, '20

I provide in; addition to the"collars 28,

guides 29m the n er side at; the frame, the saidlguides extending into the guideways' 1 6f. As here shown the guides29f are a securedbetween brackets 80 on opposite 25 sides of .the frkedfheads'18; thefbra-ckets being arranged in] pai'rs" sp acedto 'receive fsaidfguides 2 9, rivetsor equ'iyalent 'fas'ten 'ing means 3l being employed to secure the ,guides to the brackets. In order to secu're 32 are employed; the 1 brackets being formed ""W -ith holes 80 to receive saidfsetk screws; it a being A understood that the "said set screws take into threaded holes ini the cheeks of the headsl 8. A I To retain the blade hold'er'lin' the given "position on the twisting, 10; I provide set .screws 34 in the respectivearins adjac ent to thebearings 'sa d s'et screws-being poi tione'd "to ehgzag the up er 'and lower edges or the flanges 14,, -Add itional. set

screws 33 are provided in: the cheeksof the .xheads lB, andbe'ar againsfl'opposite faces "or the, blades to' 'set up" the said blades: and

proper adj usftm'ent, of the various set screws will serve -to fidispose the haw-blades in' proper position.

to? V 'pendehtbfthem' am for shifting the "post p Withthe described construttidn it*will be "seen that: the tensioning' means 27 is indetion ofithe blade holder-[so that'the sawblades may be positioned in'the' LSZLW frame as de si'red, without any dijsturbarice ofithe tension. 'In order to shift the position of a blade it is" necessary only 15 l g' 11 t screws"3;-

urn the rollers-22 at the op- "posite"en'ds of the blade, "through 'the'ine- I 6 -tital' means for car dium of the collars28," the fsaid fcollai -s and the guides 29 f-servingto give -thej f-proper v fjguid'ed movementto' the --holders' onahesaw clii'sion" that -Ido--not limit myself strictly to the mechanical" details Therein "illustrated, since "manifestly-the same can be considerably varied Without departure from the spirit of "-"the -invention.

i J0 -Hav1ng thus de'scrlbed my lnvention, I

Y the saw-blade, a roller"on-the holder 'at the outer *end adapted to {heart against "the outer side fajce ofithe saw frame, and mehns wherebyjto, turn saidroller and cause-the holder.

v 2A holderfl for the'bladesofstoneY-sayvs,

" comprising f members adapted A to slidably engage thexs ide of a saw frame, aneans on the holder at the inner end to attach an end- ;of a saw blade, a verticahrolleron the' 'holder at the'oiiter'end, means-where to cause the rbllerr'to have'frictional contact with" the outer 'side of the 'satv-- frame, and means 'whereby to turn said roller "and the frame I v y 1 1' 3 1A holder forv the"blades"of stone saws,

f-therebyj'sh'ift the holder ioagitudinau en comprising i vertically spaced feathers adapted to 'slidably receiver the side bra,

saw frame, 7 a blade-holding head at the-inereneer theh o'ld er, .a guide-on said head additional to said member's? and'projecting *towa r d' the outer endof the holder: toffengage the inner sidepf a:saw fraind an e le mention the holder at theouter'end adaptfranie,' a guide member on said element: to engage the saw frame between-the vertifoi i the holder 'to. tension the saw-blade; by freducing the distance "between the bladef holding head and the said element at the outer end.

combr is'ing' iipper' and "latest-inserted i ,vertica-llv to accommodate the side (ita -sawsame. to roll on the' fraine to shift 1 the I n g I A, I M cally' spaced members, and a 'var iablecom maintain thesaine 1n the verticaljvplane. nection between the -1nne r and outer-ends 11' 1151 der for thebladeshf sane-saws,

' 2, l Lilo led to bear against-the outer face of thesa-w' win Al L.J ,1 1 I 1111161 ends of the -arms,: lav vertical roller i I "said" roller having a 'fcollar ferm'ed with means zto" receive al tu rning' device.

2 f r fi a, edehwwe new is connectin the mner ends of theai'nis," a

vertical roller journaled in the outer ends of the arms, guides on the roller and bladeholding head, the guides being disposed toward each other and adapted for guided engagement with the side of a saw frame, and turnbuckles in said arms.

6. A holder for the blades of stone saws, comprising upper and lower spaced arms, a head connected with the arms at the inner end and formed with checks to receive the saw blade, means on the head to detachably engage a saw-blade, set screws taking laterally into said cheeks to adjust the position of the blade, turnbuckles in the arms, and a roller journaled in the outer ends of the arms and provided with means whereby it may be turned.

7. A holder for, the blades of stone saws, comprising upper and lower spaced arms, a head connected with the arms at the inner end and formed with. cheeks to receive the saw blade, means on the head to detachably engage a saw-blade, set screws taking laterally into said cheeks to adjust the position of the blade, turnbuckles in the Copies of this patent may be obtained for arms, a roller journaled in the outer ends of the arms and provided with means whereby it may be turned, and set screws on the arms, near the outer ends thereof, outside of the turnbuckles, to secure the holder against longitudinal movement.

8. A holder for the blades of stone saws, comprising upper and lower arms spaced to accommodate the side of a saw frame, means on the arms at the inner end to hold a saw-blade, a vertical roller at the outer ends of the arms, bearings on the arms for the roller, means on the roller at the ends to hold the same in the arms, washers on the roller at the inner sides of the bearings, set screws engaging the washers and bearings, and means on the roller whereby it may be turned.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

ARTHUR MICHIE. Witnesses:

CONSTANCE M. SHAUNER, Buss NEWKIRK.

five cents each, by addressing the Commissioner of I'atents,

Washington, I). G. 

